Station wagon

Station wagon

A helical-spur gear type oil pump is driven from the lower end of the distributor drive spindle which is in mesh with the camshaft. The gears are located in a special housing in the bottom of the timing gear housing and are held in place by a cover plate. The oil pressure relief valve is located at the driven end of the camshaft.

A pump suction oil filter is fitted in the sump and this connects to a duct in the timing gear case so supplying oil to the pump (see FIG 1:37).

Pump gears removal, inspection and reassembly

To remove the pump gears from the timing gear cover proceed as follows:

1. Drain the oil sump to ensure that the oil does not syphon out. Thoroughly clean the area around the pump body (see FIG 1:37).
2. Remove the end cover plate by releasing the retaining bolts and washers. Carefully ease the driven gear downwards followed by the driving gear and shaft
3. Clean all parts removed and blow clean using a compressed air jet. Inspect the timing gear cover pump area for cracks or distortion. Check that the inner duct for oil delivery to the pump is clear of obstruction. If in doubt remove the drain plug and filler cap and use a compressed air jet to clean the passage.
4. Check the gear teeth for damage or excessive wear, ensure that the drive gear is firmly attached to its spindle and that the end cover plate is not badly scored or pitted. Fit new parts as necessary.
5. Reassembly is the reverse procedure to dismantling, taking care that all parts are assembled clean and the end cover plate seating correctly with a new gasket.